package ooDay01;

//不建议三个类写一起

public class SupperDemo {
    public static void main(String[] args) {
        Boo b = new Boo();
    }
}


class Aoo{
    Aoo(){
        System.out.println("Aoo");
    }
}

class Boo extends Aoo{
    Boo(){
        super();
        System.out.println("Boo");
    }
}